Bees (Hymenoptera: Apoidea) and flowers in natural forest patches of southern Pantanal

Esta \ue9 a primeira amostragem sistem\ue1tica de abelhas realizada no Pantanal, Brasil. N\uf3s coletamos esp\ue9cies de abelhas bem como as plantas que utilizaram como recurso floral em \ue1reas de pastagens naturais e bordas de \ue1reas florestadas. As coletas foram conduzidas durante dois a quatro dias a cada m\ueas, durante 12 meses. Foram registradas 56 esp\ue9cies de abelhas visitando um total de 63 esp\ue9cies de plantas. As fam\uedlias Asteraceae e Fabaceae apresentaram o maior numero de esp\ue9cies visitadas, entretanto Hyptis suaveolens (Lamiaceae) foi a esp\ue9cie visitada pelo maior n\ufamero de esp\ue9cies diferentes de abelhas (18). A abelha nativa mais generalista encontrada foi Trigona fuscipennis, que visitou 17 esp\ue9cies de plantas. Apis mellifera, uma esp\ue9cie ex\uf3tica, visitou 27 esp\ue9cies. Reportamos tamb\ue9m a sobreposi\ue7\ue3o (37,5%) no uso de recursos florais entre A. mellifera e esp\ue9cies de abelhas nativas. A listagem de abelhas aqui apresentada inclui 10 esp\ue9cies ainda n\ue3o mencionadas para o estado de Mato Grosso do Sul. Esses dados apoiar\ue3o estrat\ue9gias de manejo focadas na conserva\ue7\ue3o das intera\ue7\uf5es entre plantas e polinizadores no ecossistema Pantanal.This is the first systematic survey of bees in the Pantanal wetland, Brazil. We recorded bee species and their floral resources within grassland and natural forest edge habitats in the Pantanal. Surveys were conducted during two to four-days per month, for a total of 12 months. Overall, we recorded 56 bee species visiting a total of 63 flowering plants. Asteraceae and Fabaceae presented the highest number of visited species, however Hyptis suaveolens (Lamiaceae) was the plant most visited by different bee species (18). The most generalist native bee was Trigona fuscipennis visiting a total of 17 flowering plant species. Apis mellifera, an exotic bee, visited 27 species. We also report the overlap (37.5%) in the use of floral resources between the exotic bee Apis mellifera and native bee species. Our updated bee checklist here presented includes 10 new records for the State of Mato Grosso do Sul. These data will support management strategies targeting the conservation of plant-pollinator interactions in the Pantanal ecosystem

ANALISE E PERCEPÇÃO AMBIENTAL NA BACIA DO IGARAPÉ ALTAMIRA-PÁ: DISCUSSÕES E PRÁTICAS EM GEOGRAFIA E GEOMORFOLOGIA NA EDUCAÇÃO BÁSICA

A temática ambiental vem a cada dia se tornado motivo de discussões nos mais diversos âmbitos da sociedade, e não seria diferente no ambiente escolar, neste sentido objetivamos neste trabalho observar a percepção dos jovens quanto às temáticas relacionadas às dinâmicas ambientais que vivenciamos cotidianamente. Observou-se por meio de questionários a percepção ambiental, buscando o entendimento que os jovens têm do meio em que vivem, com a influência dos fatores sociais e culturais

Rodenticide residues in non-target small mammal species and their occurrence in owl pellets

OBJECTIVES: Distinguishing the patterns of autoantibodies (AAB) against G-protein-coupled receptors in Chagas' cardiomyopathy and megacolon and the discovery of such a pattern in patients who are as yet asymptomatic could help to identify patients at high risk of developing the life-threatening complications of Chagas' disease. BACKGROUND: Such AAB against receptors as beta 1 (beta1-AAB), beta 2 (beta2-AAB), and muscarinergic 2 (M2-AAB) are thought to be involved in the pathogenesis of Chagas' cardiomyopathy and megacolon, the predominant manifestations of Chagas' disease, which is the most serious parasitic disease in Latin America. METHODS: Beta1-AAB, beta2-AAB, and M2-AAB were measured in the serum of asymptomatic Chagas' patients and in those with cardiomyopathy and/or megacolon. RESULTS: Nearly all Chagas' patients with cardiomyopathy and/or megacolon had AAB. Predominance of beta1-AAB combined with M2-AAB in Chagas' cardiomyopathy and beta2-AAB with M2-AAB in megacolon was found. Such patterns were also found in 34% of the asymptomatic patients, of whom 85% possessed a beta1-AAB level typical for Chagas' cardiomyopathy. CONCLUSIONS: The percentage of asymptomatic Chagas' patients who had a specific AAB pattern and had a beta1-AAB level above a defined cutoff point mirrors very well the epidemiological situation, which showed that clinical manifestations develop in nearly 30% of Chagas' patients and cardiomyopathy in nearly 90% of them. We hypothesize that beta1-, beta2-, and M2-AAB measurement might be a useful tool for risk assessment in the indeterminate state of Chagas' disease to select patients for earlier involvement in care programs. However, prospective studies are needed to further evaluate this hypothesis

Modelos acoplados do IPCC-AR4 e o gradiente meridional de temperatua da superficie do mar no atlântico tropical : relaçoes com a precipitaçao no norte do nordeste do Brasil

Este artigo mostra como três modelos acoplados do Intergovernmental on Panel Climate Change - (IPCC-AR4), o FGOALS1. 0G – LASG do Institute of Atmospheric Physics of China, o GISSER da National Aeronautics Space Admnistration (NASA) e o GFDL_CM2 da National Oceanic and Atmospheric Administration (NOAA), simularam a variabilidade do gradiente meridional de Temperatura da Superfície do Mar (TSM), entre os meses de fevereiro a maio, no Atlântico Tropical (1901-1999). A precipitação durante a estação chuvosa (fevereiro a maio) no setor norte do Nordeste do Brasil (NEB) foi também analisada pelos três modelos e comparada com as observações. Os modelos GISSER e FGOALS1.0G mostraram melhor desempenho na simulação do sinal do gradiente meridional de TSM no Atlântico Tropical para o período de 1901 a 1999. Destaca-se que os modelos apresentaram um melhor desempenho na simulação da tendência decadal, conseguindo explicar entre 50% a 80% da variabilidade do gradiente, com a TSM do setor sul sendo mais bem simulada

EDGeS: a bridge between desktop grids and service grids

Desktop grids and service grids widely used by their different users communities as efficient solutions for making full use of computing power and achieving loads balances across Intranet or Internet. Nevertheless,little work has been done to combine these two grids technologies together to establish a seamless and vast grid resources pool. In this paper we will present a new European FP7 infrastructure project:EDGeS (enabling desktop grids for e-science), which aim to build technological bridges to facilitate interoperability between desktop grid and service grid. We give also a taxonomy of existing grid systems: desktop grids such as BONIC and XtremWeb, service grids such as EGEE. Then we describe furtherly our solution for identifying translation technologies for porting applications between desktop grids and service grids, and vice versa. There are three themes in our solution, which discuss actual popular bridging technologies, user access issues, and distributed data issues about deployment and application development

An airborne regional carbon balance for central amazonia

We obtained regional estimates of surface CO2 exchange rates using atmospheric boundary layer budgeting techniques above tropical forest near Manaus, Brazil. Comparisons were made with simultaneous measurements from two eddy covariance towers below. Although there was good agreement for daytime measurements, large differences emerged for integrating periods dominated by the night-time fluxes. These results suggest that a systematic underestimation of night time respiratory effluxes may be responsible for the high Amazonian carbon sink suggested by several previous eddy covariance studies. Large CO2 fluxes from riverine sources or high respiratory losses from recently disturbed forests do not need to be invoked in order to balance the carbon budget of the Amazon. Our results do not, however, discount some contribution of these processes to the overall Amazon carbon budget